At first, I though it this was fanart for It's a Dangerous Business, Going Out Your Door. Reminds me of the whole "standing firm" thing or whatever it was that Earth Ponies can do in it. Awesome picture, and I'll have to check out the fanfic XD
This also reminds me of "It's A Dangerous Business Going Out Your Door", in which she learns to "Stand Firm", which makes an earth pony's body immovable like stone, but not literally turning into stone.
I really hope you're proud of yourself. Not only you made me fav all he 6 images you released for CRISIS: Equestria, but you also forced me to look for that Fan Fiction....now I will have to read it. You should be ashamed of yourself.
Seriously thought, those images are freaking awesome, and if it wasn't for the fact it's almost 1:00 A.M. here in my country when I'm writing this, I would have started reading the Fiction too...oh well, I guess I'll have to delay it to tomorrow. Great job!
Oh man, if you weren't the author of this incredible fanfic I would have to bash your face in for that one. On another note, let's all give Applejack the respect she deserves for the honor she displayed in her battle against Greyscale. Now if only AJ could discover the natural restorative powers of the earth then she would make the best support tank ever.